diff --git a/dev/index.js b/dev/index.js
index 5999f02..e540120 100644
--- a/dev/index.js
+++ b/dev/index.js
@@ -1,4 +1,5 @@
 /**
+ * @typedef {import('./lib/html.js').Directive} Directive
  * @typedef {import('./lib/html.js').Handle} Handle
  * @typedef {import('./lib/html.js').HtmlOptions} HtmlOptions
  */
diff --git a/readme.md b/readme.md
index d990a0b..e8596d9 100644
--- a/readme.md
+++ b/readme.md
@@ -292,8 +292,8 @@ this implementation mimics CommonMark as closely as possible:
 ## Types
 
 This package is fully typed with [TypeScript][].
-It exports the additional types [`Handle`][api-handle] and
-[`HtmlOptions`][api-html-options].
+It exports the additional types [`Directive`][api-directive-type],
+[`Handle`][api-handle], and [`HtmlOptions`][api-html-options].
 
 ## Compatibility